Systems and methods for adaptive control of excitation and generator systems

Abstract

A system includes an excitation system. The excitation system includes a memory configured to store an adaptive power system stabilizer (PSS) system configured to dynamically stabilize the operation of a generator system, and a processor communicatively coupled to the memory and configured to utilize the adaptive PSS system according to a value for one or more operational parameters of the generator system. The derived value is applied by the processor to operate the generator system when the generator system exhibits oscillations at least one of a plurality of operating frequency ranges associated with an oscillation of a power angle of the generator system. The derived value is configured to attenuate the oscillation of the power angle over the at least one of the plurality of interval operating frequency ranges.

The invention claimed is: 
     
       1. A system, comprising:
 an excitation system, comprising:
 a memory configured to store an adaptive power system stabilizer (PSS) system configured to dynamically stabilize an operation of a generator system; and 
 a processor communicatively coupled to the memory and configured to utilize the adaptive PSS system to derive a set of values for one or more operational parameters of the generator system, wherein the set of values is applied by the processor to operate the generator system when the generator system exhibits a plurality of interval operating frequency ranges associated with an oscillation of a power angle of the generator system, wherein each of the set of values corresponds to a different one of the plurality of interval operating frequency ranges, and wherein the set of values is configured to attenuate the oscillation of the power angle over the plurality of interval operating frequency ranges. 
 
 
     
     
       2. The system of  claim 1 , wherein the processor is configured to apply each of the set of values to the one or more operational parameters based at least in part on which of the plurality of interval operating frequency ranges the oscillation corresponds to. 
     
     
       3. The system of  claim 1 , wherein the plurality of interval operating frequency ranges comprises a plurality of interval frequency ranges between 0.1 Hz and 3.0 Hz, and wherein the processor is configured to attenuate the oscillation of the power angle for each frequency value between 0.1 Hz and 3.0 Hz. 
     
     
       4. The system of  claim 3 , wherein the plurality of interval operating frequency ranges comprises frequency ranges between 0.1 Hz and 0.5 Hz, between 0.1 Hz and 1.0 Hz, between 0.1 Hz and 1.5 Hz, between 0.1 Hz and 2.0 Hz, between 0.1 Hz and 2.5 Hz, between 0.1 Hz and 3.0 Hz, or any combination thereof. 
     
     
       5. The system of  claim 1 , wherein the plurality of interval operating frequency ranges comprises a first interval frequency range of 0.1 Hz to 1.0 Hz, a second interval frequency range of 1.0 Hz to 2.0 Hz, and at least a third interval frequency range of 2.0 Hz to 3.0 Hz. 
     
     
       6. The system of  claim 1 , wherein the processor is configured to utilize the adaptive PSS system to generate a training set of data for the set of values. 
     
     
       7. The system of  claim 6 , wherein the processor is configured to utilize the adaptive PSS system to derive a second set of values for one or more operational parameters of the generator system, and the memory is configured store a control logic, and wherein the processor is configured to execute the control logic to derive a set a rules associated with the set of values and the second set of values, wherein the set of rules comprises a rule logic by which to determine which of the set of values and second set of values is most suitable for adjusting the one or more operational parameters. 
     
     
       8. The system of  claim 1 , comprising:
 a generator configured to provide an electrical power; and 
 an exciter coupled to the generator, wherein the excitation system is configured to regulate an output of the generator based at least in part on the oscillation of the power angle. 
 
     
     
       9. The system of  claim 1 , wherein the processor is configured to utilize the adaptive PSS system to attenuate the oscillation of a rotor power angle of the generator system as a response to instability during the operation of the generator system. 
     
     
       10. The system of  claim 1 , wherein the processor is configured to utilize the adaptive PSS system to derive the set of values for the one or more operational parameters based on a field voltage, a field current, a real power, a reactive power, a power factor, a frequency, a terminal voltage, or a combination thereof, of the generator system. 
     
     
       11. The system of  claim 1 , wherein the adaptive PSS system comprises a fuzzy logic controller (FLC), and wherein the FLC comprises a plurality of filters configured to filter an input of a field voltage, a field current, a real power, a reactive power, a power factor, a frequency, a terminal voltage, or a combination thereof, as the input is received by the adaptive PSS system. 
     
     
       12. A non-transitory computer-readable medium having computer executable code stored thereon, the code comprising instructions configured to:
 derive a set of values for one or more operational parameters of a generator system, wherein the derived set of values is applied by a processor to operate the generator system when the generator system exhibits a plurality of interval operating frequency ranges associated with an oscillation of a power angle of the generator system, wherein each of the set of values corresponds to a different one of the plurality of interval operating frequency ranges, and wherein the derived set of values is configured to attenuate the oscillation of the power angle over each of the plurality of interval operating frequency ranges. 
 
     
     
       13. The non-transitory computer-readable medium of  claim 12 , wherein the code comprises instructions configured to apply the derived set of values to the one or more operational parameters based at least in part on which of the plurality of interval operating frequency ranges the oscillation corresponds to. 
     
     
       14. The non-transitory computer-readable medium of  claim 12 , wherein the code comprises instructions configured to attenuate the oscillation of the power angle for each frequency value in a range of 0.1 Hz to 3.0 Hz. 
     
     
       15. The non-transitory computer-readable medium of  claim 12 , wherein the code comprises instructions configured to generate a training set of data for the derived set of values. 
     
     
       16. The non-transitory computer-readable medium of  claim 12 , wherein the code comprises instructions to derive a rule associated with the derived set of values, wherein the rule comprises logic to derive a subset of values from the derived set of values as most suitable for adjusting the one or more operational parameters. 
     
     
       17. The non-transitory computer-readable medium of  claim 12 , wherein the code comprises instructions configured to attenuate the oscillation of a rotor power angle of the generator system to stabilize the operation of the generator system. 
     
     
       18. A system, comprising:
 an excitation system configured to regulate one or more outputs of a power generating system, comprising:
 a memory configured to store an adaptive power system stabilizer (PSS) system configured to dynamically stabilize an operation of the power generating system; and 
 a processor communicatively coupled to the memory and configured to execute the adaptive PSS system to derive a first set of values for one or more operational parameters of the power generating system when the power generating system is operational in a first state and to derive a second set of values for the one or more operational parameters when the power generating system is operational in a second state, wherein the second set of values is derived for each of a plurality of interval operating frequency ranges associated with the oscillation of the power angle, and wherein the second set of values is configured to attenuate an oscillation of a power angle associated with the power generating system over a complete operational output of the power generating system. 
 
 
     
     
       19. The system of  claim 18 , wherein the processor is configured to execute the adaptive PSS system to attenuate the oscillation of a rotor power angle of the generator system to stabilize the operation of a generator system.